CVE-2025-30379

HIGH

Published May 13, 2025 Modified May 19, 2025 CWE-763

Description

Release of invalid pointer or reference in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

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CVSS v3.1 Score

7.8

HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-763 CWE-763

Affected Products

Vendor	Product	Versions
microsoft	365_apps	All
microsoft	excel	All
microsoft	office	All
microsoft	office_long_term_servicing_channel	All
microsoft	office_long_term_servicing_channel	All
microsoft	office_long_term_servicing_channel	All
microsoft	office_long_term_servicing_channel	All
microsoft	office_online_server	< 16.0.10417.20010

References

Advisories & Patches

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-30379

Frequently Asked Questions

What is CVE-2025-30379? +

Release of invalid pointer or reference in Microsoft Office Excel allows an unauthorized attacker to execute code locally. It has a CVSS v3.1 base score of 7.8 (HIGH).

How severe is CVE-2025-30379? +

CVE-2025-30379 has a CVSS v3.1 score of 7.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-30379? +

CVE-2025-30379 affects products from microsoft, specifically: 365_apps, excel, office, office_long_term_servicing_channel, office_online_server. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-30379? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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